2004013421 has 2 divisors, whose sum is σ = 2004013422. Its totient is φ = 2004013420.

The previous prime is 2004013393. The next prime is 2004013433. The reversal of 2004013421 is 1243104002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1997196100 + 6817321 = 44690^2 + 2611^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2004013421 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2004013421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2004012421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1002006710 + 1002006711.

It is an arithmetic number, because the mean of its divisors is an integer number (1002006711).

Almost surely, 2^2004013421 is an apocalyptic number.

It is an amenable number.

2004013421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2004013421 is an equidigital number, since it uses as much as digits as its factorization.

2004013421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 2004013421 is about 44766.2084724628. The cubic root of 2004013421 is about 1260.7632523936.

Adding to 2004013421 its reverse (1243104002), we get a palindrome (3247117423).

The spelling of 2004013421 in words is "two billion, four million, thirteen thousand, four hundred twenty-one".